• NIOSH’s Chemical, Biological, Radiological, Nuclear (CBRN) certification standard for full facepiece air purifying respirators• This lightweight CBRN system has been tested by NIOSH against the most common warfare agents including sarin, mustard, and numerous industrial chemicals, and meets the P100 particulate filtration efficiency standard, making it one of the most versatile pieces of equipment for First Responders• The dual ocular lenses offer a wide field of vision for increased wearer comfort and safety so Responders can have excellent visual capabilities• Voice communication is made clearer with two integral speaking diaphragms